So you’re involved in a dispute and you want to make sure that your well-crafted complaint letter is mailed in a way so that it’s indisputable that your recipient got it. What’s the best way to shoot off your epistle? Certified? Signature delivery? Wrapped around a brick? Nay.
It’s not necessary to do registered mail, that’s just for shipping valuables that you want insurance on if they get lost.
Instead send it by certified mail, which guarantees and tracks delivery, including date and time it was delivered. You can check on the status online and the post office keeps a record. Request an additional return receipt to get a signature back from the recipient.
Now they’ll never be able to say that your letter “got lost in the mail!”